| Speculative Parallelism |
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Graduate research assistant |
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Liberty Research Group, Princeton University
[September 2007 ~ ] |
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General Exam, January 2009 |
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Committee: David August, Doug Clark, Margaret Martonosi
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| Rapid Control Prototyping for Robot Soccer System |
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Undergraduate research assistant |
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Control Information System Laboratory, Seoul National University
[January 2007 - June 2007 ] |
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Abstract |
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We propose rapid control prototyping (RCP) for a robot soccer using the SIMTool that has been developed in Seoul National University, Korea for the control aided control system design (CACSD). The proposed RCP enables us to carry out the rapid design and the verification of controls for two-wheeled mobile robots (TWMRs), players in the robot soccer, without writing C codes directly and requiring a special H/W. On the basis of the proposed RCP, a blockset for the robot soccer is developed for easy design of a variety of mathematical and logical algorithms. All blocks in the blockset are made up of basic blocks offered by the SIMTool. User-defined algorithms can be easily and efficiently constructed with just a combination of the blocks in the blockset. As one of the algorithms implemented with the developed blockset, a novel navigation algorithm, called a reactive navigation algorithm using the direction and the avoidance vectors based scheme (RNDAVS), is introduced. The RNDAVS is so simple and efficient as to fit into the dynamic environment. It is shown through simulations and experiments that the RNDAVS designed with the proposed RCP can avoid a local minima and the goal non-reachable with obstacles nearby (GNRON) arising from the existing methods. In order to validate the proposed RCP in a real game, we employ an official simulation game for the robot soccer, the SimuroSot. Block diagrams are constructed for strategy, path calculation, and the interface to the SIMTool. We show that the algorithms implemented with the proposed RCP work well in the simulation game.
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Robotica |
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Junwon Jang, Soohee Han, Hanjun Kim, Choon Ki Ahn, and Wook Hyun Kwon
"Rapid Control Prototyping for Robot Soccer"
Robotica:1091-1102 Cambridge Univ Press. Volume 27, 2009
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| XCP Network Analyzer on Power Line Communication |
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Undergraduate research assistant |
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Control Information System Laboratory, Seoul National University
[June 2007 - December 2007 ] |
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Features |
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Sniffing Packets on XCP Network and its Analysis
XCP Network Analysis and its Statistics
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| Platform |
Packet Capture |
Network Analysis |
Statistics |
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| Integration System of Medical Records |
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Software Developer |
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Army Computer Center, Headquarters of ROK Army
[January 2005 - November 2005] |
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Features |
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Daily Used System of the Entire Army
Group by Group, Time by time Statics for the entire army
Support special features for specific diseases
Graph on a Map based on a location
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| Database Auditing System for Personnel Records |
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Software Developer |
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Army Computer Center, Headquarters of ROK Army
[July 2004 - January 2005] |
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Features |
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Sniffing a network port for database
Audit all SQL queries
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| Web-board for Department of Justice |
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Software Developer |
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Army Computer Center, Headquarters of ROK Army
[June 2004 - July 2004] |
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Features |
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JSP Web board
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| Investigation Support Program for Military Police |
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Software Developer |
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Army Computer Center, Headquarters of ROK Army
[Jan 2004 - June 2004] |
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Features |
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(Delphi 6.0 used for implementation)
Accident-base document suggestion
Records management
Special Term Search
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| Sigma Mobile Messenger |
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Sigma Intelligence [September 2003 ~ December 2003] |
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System |
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XScale PXA255 with embedded Linux
Open source WLAN device driver, linux-wlan-ng
Buffalo WLI-CF-S11G (Intersil Prism2 chipset)
LMM2100A CMOS camera
Home portal
Modified CD player
GAIM
Video chat software, video chat
Voice chat software, gphone
On-Screen keyboard software, xvkbd
Information service agent, akqkd bot
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Features |
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Text chat
Support almost every messenger service
Video chat
jpeg streaming
Voice chat
48 kHz stereo
Information service agent
Information gathering and distributing
xvkbd
On-Screen keyboard / English and Korean supported
Home portal
Consumer Electronics control
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The Award of Minister of Information and Communication, Republic of Korea |
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Grand Prize at Embedded Software Contest [December, 2003]
Exhibition at SOFTEXPO 2003, Korea
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Co-developer |
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Beomo Kim, Sigma Intelligence
Donghyuk Woo, Sigma Intelligence
Dongyoon Lee, Sigma Inelligence
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| Service model |
Sigma Mobile Messenger |
Video Chat |
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| LCD Game |
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Sigma Intelligence [September 2002 - December 2002] |
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System |
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S3C44BOX (ARM7 core) machine with no OS support
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Features |
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Different difficulty levels
Sound effect
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Co-developer |
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Jaekwang Lee, Sigma Intelligence
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| Hardware |
Opening |
Math Game |
English Game |
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| Ponpoko Arcade Video Game |
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Samsung-SNU Digital ASIC Design course [July 2002] |
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System |
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ALTERA FPGA (EPF10K70RC240-4)
Verilog-HDL
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Features |
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Image layers
Different difficulty levels
Sound effect
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Best Design Award at Samsung-SNU inter-univ. program [July 2002]
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Co-developer |
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Jaehwa Kwak
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| Wireless Mouse |
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Sigma Intelligence [March 2002 - June 2002] |
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System |
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89C52 (8bit micro-controller)
radiometrix BiM 418-F (RF Module)
PS2 Cable
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Features |
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Button type wireless mouse
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| Robot Soccer |
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Sigma Intelligence [May 2000 - February 2002]
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System - MIROSOT |
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Host
S/W based on Visual C++ 6.0
Camera: Pullix TMC7, 0.5inch/8mm lens
Vision board:Bt848 (640*480, 60 Fields/Sec, YCbCr422 format)
Device Driver: developed by us
radiometrix BiM 418-F/433-F (RF Module)
Robots
89C52 (8bit micro-controller)
SLR7024 (Motor Drive)
Stepping motor
radiometrix BiM 418-F/433-F (RF Module)
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Exhibited at EE Fair 2000, 2001 SoEE, SNU
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Co-developer |
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Robot Soccer Team in Sigma Intelligence
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| Remote Control Car |
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Sigma Intelligence [March 2000 - August 2000]
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System |
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Remote Controller
Z80 (8-bit microprocessor)
29C256 (ROM)
62256 (RAM)
8251 (serial communication)
radiometrix BiM 418-F (RF Module)
key-pad
Car
89C52 (8-bit micro-controller)
SLR7024 (Motor Drive)
Stepping motor
radiometrix BiM 418-F (RF Module)
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My first experience with microprocessor and microcontroller. Z80 was used to teach freshmen in my robotics club. It offered me great chances to understand the computer architecture deeply.
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